File: glob.c

package info (click to toggle)
glibc 2.28-8
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, experimental, sid
  • size: 271,788 kB
  • sloc: ansic: 1,008,637; asm: 259,607; makefile: 11,271; sh: 10,477; python: 6,910; cpp: 4,992; perl: 2,258; awk: 2,005; yacc: 290; pascal: 182; sed: 73
file content (1483 lines) | stat: -rw-r--r-- 38,745 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <glob.h>

#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <assert.h>
#include <unistd.h>

#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# define WINDOWS32
#endif

#ifndef WINDOWS32
# include <pwd.h>
#endif

#include <errno.h>
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <alloca.h>

#ifdef _LIBC
# undef strdup
# define strdup(str) __strdup (str)
# define sysconf(id) __sysconf (id)
# define closedir(dir) __closedir (dir)
# define opendir(name) __opendir (name)
# define readdir(str) __readdir64 (str)
# define getpwnam_r(name, bufp, buf, len, res) \
    __getpwnam_r (name, bufp, buf, len, res)
# ifndef __lstat64
#  define __lstat64(fname, buf) __lxstat64 (_STAT_VER, fname, buf)
# endif
# ifndef __stat64
#  define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
# endif
# define struct_stat64		struct stat64
# define FLEXIBLE_ARRAY_MEMBER
# include <shlib-compat.h>
#else /* !_LIBC */
# define __glob                 glob
# define __getlogin_r(buf, len) getlogin_r (buf, len)
# define __lstat64(fname, buf)  lstat (fname, buf)
# define __stat64(fname, buf)   stat (fname, buf)
# define __fxstatat64(_, d, f, st, flag) fstatat (d, f, st, flag)
# define struct_stat64          struct stat
# ifndef __MVS__
#  define __alloca              alloca
# endif
# define __readdir              readdir
# define COMPILE_GLOB64
#endif /* _LIBC */

#include <fnmatch.h>

#include <flexmember.h>
#include <glob_internal.h>
#include <scratch_buffer.h>

static const char *next_brace_sub (const char *begin, int flags) __THROWNL;

typedef uint_fast8_t dirent_type;

#if !defined _LIBC && !defined HAVE_STRUCT_DIRENT_D_TYPE
/* Any distinct values will do here.
   Undef any existing macros out of the way.  */
# undef DT_UNKNOWN
# undef DT_DIR
# undef DT_LNK
# define DT_UNKNOWN 0
# define DT_DIR 1
# define DT_LNK 2
#endif

/* A representation of a directory entry which does not depend on the
   layout of struct dirent, or the size of ino_t.  */
struct readdir_result
{
  const char *name;
#if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
  dirent_type type;
#endif
};

/* Initialize and return type member of struct readdir_result.  */
static dirent_type
readdir_result_type (struct readdir_result d)
{
#if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
# define D_TYPE_TO_RESULT(source) (source)->d_type,
  return d.type;
#else
# define D_TYPE_TO_RESULT(source)
  return DT_UNKNOWN;
#endif
}

/* Construct an initializer for a struct readdir_result object from a
   struct dirent *.  No copy of the name is made.  */
#define READDIR_RESULT_INITIALIZER(source) \
  {					   \
    source->d_name,			   \
    D_TYPE_TO_RESULT (source)		   \
  }

/* Call gl_readdir on STREAM.  This macro can be overridden to reduce
   type safety if an old interface version needs to be supported.  */
#ifndef GL_READDIR
# define GL_READDIR(pglob, stream) ((pglob)->gl_readdir (stream))
#endif

/* Extract name and type from directory entry.  No copy of the name is
   made.  If SOURCE is NULL, result name is NULL.  Keep in sync with
   convert_dirent64 below.  */
static struct readdir_result
convert_dirent (const struct dirent *source)
{
  if (source == NULL)
    {
      struct readdir_result result = { NULL, };
      return result;
    }
  struct readdir_result result = READDIR_RESULT_INITIALIZER (source);
  return result;
}

#ifndef COMPILE_GLOB64
/* Like convert_dirent, but works on struct dirent64 instead.  Keep in
   sync with convert_dirent above.  */
static struct readdir_result
convert_dirent64 (const struct dirent64 *source)
{
  if (source == NULL)
    {
      struct readdir_result result = { NULL, };
      return result;
    }
  struct readdir_result result = READDIR_RESULT_INITIALIZER (source);
  return result;
}
#endif

#ifndef _LIBC
/* The results of opendir() in this file are not used with dirfd and fchdir,
   and we do not leak fds to any single-threaded code that could use stdio,
   therefore save some unnecessary recursion in fchdir.c and opendir_safer.c.
   FIXME - if the kernel ever adds support for multi-thread safety for
   avoiding standard fds, then we should use opendir_safer.  */
# ifdef GNULIB_defined_opendir
#  undef opendir
# endif
# ifdef GNULIB_defined_closedir
#  undef closedir
# endif

/* Just use malloc.  */
# define __libc_use_alloca(n) false
# define alloca_account(len, avar) ((void) (len), (void) (avar), (void *) 0)
# define extend_alloca_account(buf, len, newlen, avar) \
    ((void) (buf), (void) (len), (void) (newlen), (void) (avar), (void *) 0)
#endif

static int
glob_lstat (glob_t *pglob, int flags, const char *fullname)
{
/* Use on glob-lstat-compat.c to provide a compat symbol which does not
   use lstat / gl_lstat.  */
#ifdef GLOB_NO_LSTAT
# define GL_LSTAT gl_stat
# define LSTAT64 __stat64
#else
# define GL_LSTAT gl_lstat
# define LSTAT64 __lstat64
#endif

  union
  {
    struct stat st;
    struct_stat64 st64;
  } ust;
  return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)
          ? pglob->GL_LSTAT (fullname, &ust.st)
          : LSTAT64 (fullname, &ust.st64));
}

/* Set *R = A + B.  Return true if the answer is mathematically
   incorrect due to overflow; in this case, *R is the low order
   bits of the correct answer.  */

static bool
size_add_wrapv (size_t a, size_t b, size_t *r)
{
#if 5 <= __GNUC__ && !defined __ICC
  return __builtin_add_overflow (a, b, r);
#else
  *r = a + b;
  return *r < a;
#endif
}

static bool
glob_use_alloca (size_t alloca_used, size_t len)
{
  size_t size;
  return (!size_add_wrapv (alloca_used, len, &size)
          && __libc_use_alloca (size));
}

static int glob_in_dir (const char *pattern, const char *directory,
			int flags, int (*errfunc) (const char *, int),
			glob_t *pglob, size_t alloca_used);
static int prefix_array (const char *prefix, char **array, size_t n) __THROWNL;
static int collated_compare (const void *, const void *) __THROWNL;


/* Return true if FILENAME is a directory or a symbolic link to a directory.
   Use FLAGS and PGLOB to resolve the filename.  */
static bool
is_dir (char const *filename, int flags, glob_t const *pglob)
{
  struct stat st;
  struct_stat64 st64;
  return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)
          ? pglob->gl_stat (filename, &st) == 0 && S_ISDIR (st.st_mode)
          : __stat64 (filename, &st64) == 0 && S_ISDIR (st64.st_mode));
}

/* Find the end of the sub-pattern in a brace expression.  */
static const char *
next_brace_sub (const char *cp, int flags)
{
  size_t depth = 0;
  while (*cp != '\0')
    if ((flags & GLOB_NOESCAPE) == 0 && *cp == '\\')
      {
	if (*++cp == '\0')
	  break;
	++cp;
      }
    else
      {
	if ((*cp == '}' && depth-- == 0) || (*cp == ',' && depth == 0))
	  break;

	if (*cp++ == '{')
	  depth++;
      }

  return *cp != '\0' ? cp : NULL;
}

#ifndef GLOB_ATTRIBUTE
# define GLOB_ATTRIBUTE
#endif

/* Do glob searching for PATTERN, placing results in PGLOB.
   The bits defined above may be set in FLAGS.
   If a directory cannot be opened or read and ERRFUNC is not nil,
   it is called with the pathname that caused the error, and the
   'errno' value from the failing call; if it returns non-zero
   'glob' returns GLOB_ABORTED; if it returns zero, the error is ignored.
   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
   Otherwise, 'glob' returns zero.  */
int
GLOB_ATTRIBUTE
__glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
	glob_t *pglob)
{
  const char *filename;
  char *dirname = NULL;
  size_t dirlen;
  int status;
  size_t oldcount;
  int meta;
  int dirname_modified;
  int malloc_dirname = 0;
  glob_t dirs;
  int retval = 0;
  size_t alloca_used = 0;

  if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
    {
      __set_errno (EINVAL);
      return -1;
    }

  /* POSIX requires all slashes to be matched.  This means that with
     a trailing slash we must match only directories.  */
  if (pattern[0] && pattern[strlen (pattern) - 1] == '/')
    flags |= GLOB_ONLYDIR;

  if (!(flags & GLOB_DOOFFS))
    /* Have to do this so 'globfree' knows where to start freeing.  It
       also makes all the code that uses gl_offs simpler. */
    pglob->gl_offs = 0;

  if (!(flags & GLOB_APPEND))
    {
      pglob->gl_pathc = 0;
      if (!(flags & GLOB_DOOFFS))
	pglob->gl_pathv = NULL;
      else
	{
	  size_t i;

	  if (pglob->gl_offs >= ~((size_t) 0) / sizeof (char *))
	    return GLOB_NOSPACE;

	  pglob->gl_pathv = (char **) malloc ((pglob->gl_offs + 1)
					      * sizeof (char *));
	  if (pglob->gl_pathv == NULL)
	    return GLOB_NOSPACE;

	  for (i = 0; i <= pglob->gl_offs; ++i)
	    pglob->gl_pathv[i] = NULL;
	}
    }

  if (flags & GLOB_BRACE)
    {
      const char *begin;

      if (flags & GLOB_NOESCAPE)
	begin = strchr (pattern, '{');
      else
	{
	  begin = pattern;
	  while (1)
	    {
	      if (*begin == '\0')
		{
		  begin = NULL;
		  break;
		}

	      if (*begin == '\\' && begin[1] != '\0')
		++begin;
	      else if (*begin == '{')
		break;

	      ++begin;
	    }
	}

      if (begin != NULL)
	{
	  /* Allocate working buffer large enough for our work.  Note that
	    we have at least an opening and closing brace.  */
	  size_t firstc;
	  char *alt_start;
	  const char *p;
	  const char *next;
	  const char *rest;
	  size_t rest_len;
	  char *onealt;
	  size_t pattern_len = strlen (pattern) - 1;
	  int alloca_onealt = glob_use_alloca (alloca_used, pattern_len);
	  if (alloca_onealt)
	    onealt = alloca_account (pattern_len, alloca_used);
	  else
	    {
	      onealt = malloc (pattern_len);
	      if (onealt == NULL)
		return GLOB_NOSPACE;
	    }

	  /* We know the prefix for all sub-patterns.  */
	  alt_start = mempcpy (onealt, pattern, begin - pattern);

	  /* Find the first sub-pattern and at the same time find the
	     rest after the closing brace.  */
	  next = next_brace_sub (begin + 1, flags);
	  if (next == NULL)
	    {
	      /* It is an invalid expression.  */
	    illegal_brace:
	      if (__glibc_unlikely (!alloca_onealt))
		free (onealt);
	      flags &= ~GLOB_BRACE;
	      goto no_brace;
	    }

	  /* Now find the end of the whole brace expression.  */
	  rest = next;
	  while (*rest != '}')
	    {
	      rest = next_brace_sub (rest + 1, flags);
	      if (rest == NULL)
		/* It is an illegal expression.  */
		goto illegal_brace;
	    }
	  /* Please note that we now can be sure the brace expression
	     is well-formed.  */
	  rest_len = strlen (++rest) + 1;

	  /* We have a brace expression.  BEGIN points to the opening {,
	     NEXT points past the terminator of the first element, and END
	     points past the final }.  We will accumulate result names from
	     recursive runs for each brace alternative in the buffer using
	     GLOB_APPEND.  */
	  firstc = pglob->gl_pathc;

	  p = begin + 1;
	  while (1)
	    {
	      int result;

	      /* Construct the new glob expression.  */
	      mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len);

	      result = __glob (onealt,
			       ((flags & ~(GLOB_NOCHECK | GLOB_NOMAGIC))
				| GLOB_APPEND),
			       errfunc, pglob);

	      /* If we got an error, return it.  */
	      if (result && result != GLOB_NOMATCH)
		{
		  if (__glibc_unlikely (!alloca_onealt))
		    free (onealt);
		  if (!(flags & GLOB_APPEND))
		    {
		      globfree (pglob);
		      pglob->gl_pathc = 0;
		    }
		  return result;
		}

	      if (*next == '}')
		/* We saw the last entry.  */
		break;

	      p = next + 1;
	      next = next_brace_sub (p, flags);
	      assert (next != NULL);
	    }

	  if (__glibc_unlikely (!alloca_onealt))
	    free (onealt);

	  if (pglob->gl_pathc != firstc)
	    /* We found some entries.  */
	    return 0;
	  else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
	    return GLOB_NOMATCH;
	}
    }

 no_brace:
  oldcount = pglob->gl_pathc + pglob->gl_offs;

  /* Find the filename.  */
  filename = strrchr (pattern, '/');

#if defined __MSDOS__ || defined WINDOWS32
  /* The case of "d:pattern".  Since ':' is not allowed in
     file names, we can safely assume that wherever it
     happens in pattern, it signals the filename part.  This
     is so we could some day support patterns like "[a-z]:foo".  */
  if (filename == NULL)
    filename = strchr (pattern, ':');
#endif /* __MSDOS__ || WINDOWS32 */

  dirname_modified = 0;
  if (filename == NULL)
    {
      /* This can mean two things: a simple name or "~name".  The latter
	 case is nothing but a notation for a directory.  */
      if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~')
	{
	  dirname = (char *) pattern;
	  dirlen = strlen (pattern);

	  /* Set FILENAME to NULL as a special flag.  This is ugly but
	     other solutions would require much more code.  We test for
	     this special case below.  */
	  filename = NULL;
	}
      else
	{
	  if (__glibc_unlikely (pattern[0] == '\0'))
	    {
	      dirs.gl_pathv = NULL;
	      goto no_matches;
	    }

	  filename = pattern;
	  dirname = (char *) ".";
	  dirlen = 0;
	}
    }
  else if (filename == pattern
	   || (filename == pattern + 1 && pattern[0] == '\\'
	       && (flags & GLOB_NOESCAPE) == 0))
    {
      /* "/pattern" or "\\/pattern".  */
      dirname = (char *) "/";
      dirlen = 1;
      ++filename;
    }
  else
    {
      char *newp;
      dirlen = filename - pattern;
#if defined __MSDOS__ || defined WINDOWS32
      if (*filename == ':'
	  || (filename > pattern + 1 && filename[-1] == ':'))
	{
	  char *drive_spec;

	  ++dirlen;
	  drive_spec = __alloca (dirlen + 1);
	  *((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0';
	  /* For now, disallow wildcards in the drive spec, to
	     prevent infinite recursion in glob.  */
	  if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
	    return GLOB_NOMATCH;
	  /* If this is "d:pattern", we need to copy ':' to DIRNAME
	     as well.  If it's "d:/pattern", don't remove the slash
	     from "d:/", since "d:" and "d:/" are not the same.*/
	}
#endif

      if (glob_use_alloca (alloca_used, dirlen + 1))
	newp = alloca_account (dirlen + 1, alloca_used);
      else
	{
	  newp = malloc (dirlen + 1);
	  if (newp == NULL)
	    return GLOB_NOSPACE;
	  malloc_dirname = 1;
	}
      *((char *) mempcpy (newp, pattern, dirlen)) = '\0';
      dirname = newp;
      ++filename;

#if defined __MSDOS__ || defined WINDOWS32
      bool drive_root = (dirlen > 1
                         && (dirname[dirlen - 1] == ':'
                             || (dirlen > 2 && dirname[dirlen - 2] == ':'
                                 && dirname[dirlen - 1] == '/')));
#else
      bool drive_root = false;
#endif

      if (filename[0] == '\0' && dirlen > 1 && !drive_root)
        /* "pattern/".  Expand "pattern", appending slashes.  */
	{
	  int orig_flags = flags;
	  if (!(flags & GLOB_NOESCAPE) && dirname[dirlen - 1] == '\\')
	    {
	      /* "pattern\\/".  Remove the final backslash if it hasn't
		 been quoted.  */
	      char *p = (char *) &dirname[dirlen - 1];

	      while (p > dirname && p[-1] == '\\') --p;
	      if ((&dirname[dirlen] - p) & 1)
		{
		  *(char *) &dirname[--dirlen] = '\0';
		  flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC);
		}
	    }
	  int val = __glob (dirname, flags | GLOB_MARK, errfunc, pglob);
	  if (val == 0)
	    pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK)
			       | (flags & GLOB_MARK));
	  else if (val == GLOB_NOMATCH && flags != orig_flags)
	    {
	      /* Make sure globfree (&dirs); is a nop.  */
	      dirs.gl_pathv = NULL;
	      flags = orig_flags;
	      oldcount = pglob->gl_pathc + pglob->gl_offs;
	      goto no_matches;
	    }
	  retval = val;
	  goto out;
	}
    }

  if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
    {
      if (dirname[1] == '\0' || dirname[1] == '/'
	  || (!(flags & GLOB_NOESCAPE) && dirname[1] == '\\'
	      && (dirname[2] == '\0' || dirname[2] == '/')))
	{
	  /* Look up home directory.  */
	  char *home_dir = getenv ("HOME");
	  int malloc_home_dir = 0;
	  if (home_dir == NULL || home_dir[0] == '\0')
	    {
#ifdef WINDOWS32
	      /* Windows NT defines HOMEDRIVE and HOMEPATH.  But give
		 preference to HOME, because the user can change HOME.  */
	      const char *home_drive = getenv ("HOMEDRIVE");
	      const char *home_path = getenv ("HOMEPATH");

	      if (home_drive != NULL && home_path != NULL)
		{
		  size_t home_drive_len = strlen (home_drive);
		  size_t home_path_len = strlen (home_path);
		  char *mem = alloca (home_drive_len + home_path_len + 1);

		  memcpy (mem, home_drive, home_drive_len);
		  memcpy (mem + home_drive_len, home_path, home_path_len + 1);
		  home_dir = mem;
		}
	      else
		home_dir = "c:/users/default"; /* poor default */
#else
	      int err;
	      struct passwd *p;
	      struct passwd pwbuf;
	      struct scratch_buffer s;
	      scratch_buffer_init (&s);
	      while (true)
		{
		  p = NULL;
		  err = __getlogin_r (s.data, s.length);
		  if (err == 0)
		    {
# if defined HAVE_GETPWNAM_R || defined _LIBC
		      size_t ssize = strlen (s.data) + 1;
		      char *sdata = s.data;
		      err = getpwnam_r (sdata, &pwbuf, sdata + ssize,
					s.length - ssize, &p);
# else
		      p = getpwnam (s.data);
		      if (p == NULL)
			err = errno;
# endif
		    }
		  if (err != ERANGE)
		    break;
		  if (!scratch_buffer_grow (&s))
		    {
		      retval = GLOB_NOSPACE;
		      goto out;
		    }
		}
	      if (err == 0)
		{
		  home_dir = strdup (p->pw_dir);
		  malloc_home_dir = 1;
		}
	      scratch_buffer_free (&s);
	      if (err == 0 && home_dir == NULL)
		{
		  retval = GLOB_NOSPACE;
		  goto out;
		}
#endif /* WINDOWS32 */
	    }
	  if (home_dir == NULL || home_dir[0] == '\0')
	    {
	      if (__glibc_unlikely (malloc_home_dir))
		free (home_dir);
	      if (flags & GLOB_TILDE_CHECK)
		{
		  retval = GLOB_NOMATCH;
		  goto out;
		}
	      else
		{
		  home_dir = (char *) "~"; /* No luck.  */
		  malloc_home_dir = 0;
		}
	    }
	  /* Now construct the full directory.  */
	  if (dirname[1] == '\0')
	    {
	      if (__glibc_unlikely (malloc_dirname))
		free (dirname);

	      dirname = home_dir;
	      dirlen = strlen (dirname);
	      malloc_dirname = malloc_home_dir;
	    }
	  else
	    {
	      char *newp;
	      size_t home_len = strlen (home_dir);
	      int use_alloca = glob_use_alloca (alloca_used, home_len + dirlen);
	      if (use_alloca)
		newp = alloca_account (home_len + dirlen, alloca_used);
	      else
		{
		  newp = malloc (home_len + dirlen);
		  if (newp == NULL)
		    {
		      if (__glibc_unlikely (malloc_home_dir))
			free (home_dir);
		      retval = GLOB_NOSPACE;
		      goto out;
		    }
		}

	      mempcpy (mempcpy (newp, home_dir, home_len),
		       &dirname[1], dirlen);

	      if (__glibc_unlikely (malloc_dirname))
		free (dirname);

	      dirname = newp;
	      dirlen += home_len - 1;
	      malloc_dirname = !use_alloca;

	      if (__glibc_unlikely (malloc_home_dir))
		free (home_dir);
	    }
	  dirname_modified = 1;
	}
      else
	{
#ifndef WINDOWS32
	  char *end_name = strchr (dirname, '/');
	  char *user_name;
	  int malloc_user_name = 0;
	  char *unescape = NULL;

	  if (!(flags & GLOB_NOESCAPE))
	    {
	      if (end_name == NULL)
		{
		  unescape = strchr (dirname, '\\');
		  if (unescape)
		    end_name = strchr (unescape, '\0');
		}
	      else
		unescape = memchr (dirname, '\\', end_name - dirname);
	    }
	  if (end_name == NULL)
	    user_name = dirname + 1;
	  else
	    {
	      char *newp;
	      if (glob_use_alloca (alloca_used, end_name - dirname))
		newp = alloca_account (end_name - dirname, alloca_used);
	      else
		{
		  newp = malloc (end_name - dirname);
		  if (newp == NULL)
		    {
		      retval = GLOB_NOSPACE;
		      goto out;
		    }
		  malloc_user_name = 1;
		}
	      if (unescape != NULL)
		{
		  char *p = mempcpy (newp, dirname + 1,
				     unescape - dirname - 1);
		  char *q = unescape;
		  while (q != end_name)
		    {
		      if (*q == '\\')
			{
			  if (q + 1 == end_name)
			    {
			      /* "~fo\\o\\" unescape to user_name "foo\\",
				 but "~fo\\o\\/" unescape to user_name
				 "foo".  */
			      if (filename == NULL)
				*p++ = '\\';
			      break;
			    }
			  ++q;
			}
		      *p++ = *q++;
		    }
		  *p = '\0';
		}
	      else
		*((char *) mempcpy (newp, dirname + 1, end_name - dirname - 1))
		  = '\0';
	      user_name = newp;
	    }

	  /* Look up specific user's home directory.  */
	  {
	    struct passwd *p;
	    struct scratch_buffer pwtmpbuf;
	    scratch_buffer_init (&pwtmpbuf);

#  if defined HAVE_GETPWNAM_R || defined _LIBC
	    struct passwd pwbuf;

	    while (getpwnam_r (user_name, &pwbuf,
			       pwtmpbuf.data, pwtmpbuf.length, &p)
		   == ERANGE)
	      {
		if (!scratch_buffer_grow (&pwtmpbuf))
		  {
		    retval = GLOB_NOSPACE;
		    goto out;
		  }
	      }
#  else
	    p = getpwnam (user_name);
#  endif

	    if (__glibc_unlikely (malloc_user_name))
	      free (user_name);

	    /* If we found a home directory use this.  */
	    if (p != NULL)
	      {
		size_t home_len = strlen (p->pw_dir);
		size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
		char *d;

		if (__glibc_unlikely (malloc_dirname))
		  free (dirname);
		malloc_dirname = 0;

		if (glob_use_alloca (alloca_used, home_len + rest_len + 1))
		  dirname = alloca_account (home_len + rest_len + 1,
					    alloca_used);
		else
		  {
		    dirname = malloc (home_len + rest_len + 1);
		    if (dirname == NULL)
		      {
			scratch_buffer_free (&pwtmpbuf);
			retval = GLOB_NOSPACE;
			goto out;
		      }
		    malloc_dirname = 1;
		  }
		d = mempcpy (dirname, p->pw_dir, home_len);
		if (end_name != NULL)
		  d = mempcpy (d, end_name, rest_len);
		*d = '\0';

		dirlen = home_len + rest_len;
		dirname_modified = 1;
	      }
	    else
	      {
		if (flags & GLOB_TILDE_CHECK)
		  {
		    /* We have to regard it as an error if we cannot find the
		       home directory.  */
		    retval = GLOB_NOMATCH;
		    goto out;
		  }
	      }
	    scratch_buffer_free (&pwtmpbuf);
	  }
#endif /* !WINDOWS32 */
	}
    }

  /* Now test whether we looked for "~" or "~NAME".  In this case we
     can give the answer now.  */
  if (filename == NULL)
    {
	size_t newcount = pglob->gl_pathc + pglob->gl_offs;
	char **new_gl_pathv;

	if (newcount > SIZE_MAX / sizeof (char *) - 2)
	  {
	  nospace:
	    free (pglob->gl_pathv);
	    pglob->gl_pathv = NULL;
	    pglob->gl_pathc = 0;
	    retval = GLOB_NOSPACE;
	    goto out;
	  }

	new_gl_pathv = realloc (pglob->gl_pathv,
				(newcount + 2) * sizeof (char *));
	if (new_gl_pathv == NULL)
	  goto nospace;
	pglob->gl_pathv = new_gl_pathv;

	if (flags & GLOB_MARK && is_dir (dirname, flags, pglob))
	  {
	    char *p;
	    pglob->gl_pathv[newcount] = malloc (dirlen + 2);
	    if (pglob->gl_pathv[newcount] == NULL)
	      goto nospace;
	    p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen);
	    p[0] = '/';
	    p[1] = '\0';
	    if (__glibc_unlikely (malloc_dirname))
	      free (dirname);
	  }
	else
	  {
	    if (__glibc_unlikely (malloc_dirname))
	      pglob->gl_pathv[newcount] = dirname;
	    else
	      {
		pglob->gl_pathv[newcount] = strdup (dirname);
		if (pglob->gl_pathv[newcount] == NULL)
		  goto nospace;
	      }
	  }
	pglob->gl_pathv[++newcount] = NULL;
	++pglob->gl_pathc;
	pglob->gl_flags = flags;

	return 0;
    }

  meta = __glob_pattern_type (dirname, !(flags & GLOB_NOESCAPE));
  /* meta is 1 if correct glob pattern containing metacharacters.
     If meta has bit (1 << 2) set, it means there was an unterminated
     [ which we handle the same, using fnmatch.  Broken unterminated
     pattern bracket expressions ought to be rare enough that it is
     not worth special casing them, fnmatch will do the right thing.  */
  if (meta & (GLOBPAT_SPECIAL | GLOBPAT_BRACKET))
    {
      /* The directory name contains metacharacters, so we
	 have to glob for the directory, and then glob for
	 the pattern in each directory found.  */
      size_t i;

      if (!(flags & GLOB_NOESCAPE) && dirlen > 0 && dirname[dirlen - 1] == '\\')
	{
	  /* "foo\\/bar".  Remove the final backslash from dirname
	     if it has not been quoted.  */
	  char *p = (char *) &dirname[dirlen - 1];

	  while (p > dirname && p[-1] == '\\') --p;
	  if ((&dirname[dirlen] - p) & 1)
	    *(char *) &dirname[--dirlen] = '\0';
	}

      if (__glibc_unlikely ((flags & GLOB_ALTDIRFUNC) != 0))
	{
	  /* Use the alternative access functions also in the recursive
	     call.  */
	  dirs.gl_opendir = pglob->gl_opendir;
	  dirs.gl_readdir = pglob->gl_readdir;
	  dirs.gl_closedir = pglob->gl_closedir;
	  dirs.gl_stat = pglob->gl_stat;
	  dirs.gl_lstat = pglob->gl_lstat;
	}

      status = __glob (dirname,
		       ((flags & (GLOB_ERR | GLOB_NOESCAPE | GLOB_ALTDIRFUNC))
			| GLOB_NOSORT | GLOB_ONLYDIR),
		       errfunc, &dirs);
      if (status != 0)
	{
	  if ((flags & GLOB_NOCHECK) == 0 || status != GLOB_NOMATCH)
	    {
	      retval = status;
	      goto out;
	    }
	  goto no_matches;
	}

      /* We have successfully globbed the preceding directory name.
	 For each name we found, call glob_in_dir on it and FILENAME,
	 appending the results to PGLOB.  */
      for (i = 0; i < dirs.gl_pathc; ++i)
	{
	  size_t old_pathc;

	  old_pathc = pglob->gl_pathc;
	  status = glob_in_dir (filename, dirs.gl_pathv[i],
				((flags | GLOB_APPEND)
				 & ~(GLOB_NOCHECK | GLOB_NOMAGIC)),
				errfunc, pglob, alloca_used);
	  if (status == GLOB_NOMATCH)
	    /* No matches in this directory.  Try the next.  */
	    continue;

	  if (status != 0)
	    {
	      globfree (&dirs);
	      globfree (pglob);
	      pglob->gl_pathc = 0;
	      retval = status;
	      goto out;
	    }

	  /* Stick the directory on the front of each name.  */
	  if (prefix_array (dirs.gl_pathv[i],
			    &pglob->gl_pathv[old_pathc + pglob->gl_offs],
			    pglob->gl_pathc - old_pathc))
	    {
	      globfree (&dirs);
	      globfree (pglob);
	      pglob->gl_pathc = 0;
	      retval = GLOB_NOSPACE;
	      goto out;
	    }
	}

      flags |= GLOB_MAGCHAR;

      /* We have ignored the GLOB_NOCHECK flag in the 'glob_in_dir' calls.
	 But if we have not found any matching entry and the GLOB_NOCHECK
	 flag was set we must return the input pattern itself.  */
      if (pglob->gl_pathc + pglob->gl_offs == oldcount)
	{
	no_matches:
	  /* No matches.  */
	  if (flags & GLOB_NOCHECK)
	    {
	      size_t newcount = pglob->gl_pathc + pglob->gl_offs;
	      char **new_gl_pathv;

	      if (newcount > SIZE_MAX / sizeof (char *) - 2)
		{
		nospace2:
		  globfree (&dirs);
		  retval = GLOB_NOSPACE;
		  goto out;
		}

	      new_gl_pathv = realloc (pglob->gl_pathv,
				      (newcount + 2) * sizeof (char *));
	      if (new_gl_pathv == NULL)
		goto nospace2;
	      pglob->gl_pathv = new_gl_pathv;

	      pglob->gl_pathv[newcount] = strdup (pattern);
	      if (pglob->gl_pathv[newcount] == NULL)
		{
		  globfree (&dirs);
		  globfree (pglob);
		  pglob->gl_pathc = 0;
		  retval = GLOB_NOSPACE;
		  goto out;
		}

	      ++pglob->gl_pathc;
	      ++newcount;

	      pglob->gl_pathv[newcount] = NULL;
	      pglob->gl_flags = flags;
	    }
	  else
	    {
	      globfree (&dirs);
	      retval = GLOB_NOMATCH;
	      goto out;
	    }
	}

      globfree (&dirs);
    }
  else
    {
      size_t old_pathc = pglob->gl_pathc;
      int orig_flags = flags;

      if (meta & GLOBPAT_BACKSLASH)
	{
	  char *p = strchr (dirname, '\\'), *q;
	  /* We need to unescape the dirname string.  It is certainly
	     allocated by alloca, as otherwise filename would be NULL
	     or dirname wouldn't contain backslashes.  */
	  q = p;
	  do
	    {
	      if (*p == '\\')
		{
		  *q = *++p;
		  --dirlen;
		}
	      else
		*q = *p;
	      ++q;
	    }
	  while (*p++ != '\0');
	  dirname_modified = 1;
	}
      if (dirname_modified)
	flags &= ~(GLOB_NOCHECK | GLOB_NOMAGIC);
      status = glob_in_dir (filename, dirname, flags, errfunc, pglob,
			    alloca_used);
      if (status != 0)
	{
	  if (status == GLOB_NOMATCH && flags != orig_flags
	      && pglob->gl_pathc + pglob->gl_offs == oldcount)
	    {
	      /* Make sure globfree (&dirs); is a nop.  */
	      dirs.gl_pathv = NULL;
	      flags = orig_flags;
	      goto no_matches;
	    }
	  retval = status;
	  goto out;
	}

      if (dirlen > 0)
	{
	  /* Stick the directory on the front of each name.  */
	  if (prefix_array (dirname,
			    &pglob->gl_pathv[old_pathc + pglob->gl_offs],
			    pglob->gl_pathc - old_pathc))
	    {
	      globfree (pglob);
	      pglob->gl_pathc = 0;
	      retval = GLOB_NOSPACE;
	      goto out;
	    }
	}
    }

  if (flags & GLOB_MARK)
    {
      /* Append slashes to directory names.  */
      size_t i;

      for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i)
	if (is_dir (pglob->gl_pathv[i], flags, pglob))
	  {
	    size_t len = strlen (pglob->gl_pathv[i]) + 2;
	    char *new = realloc (pglob->gl_pathv[i], len);
	    if (new == NULL)
	      {
		globfree (pglob);
		pglob->gl_pathc = 0;
		retval = GLOB_NOSPACE;
		goto out;
	      }
	    strcpy (&new[len - 2], "/");
	    pglob->gl_pathv[i] = new;
	  }
    }

  if (!(flags & GLOB_NOSORT))
    {
      /* Sort the vector.  */
      qsort (&pglob->gl_pathv[oldcount],
	     pglob->gl_pathc + pglob->gl_offs - oldcount,
	     sizeof (char *), collated_compare);
    }

 out:
  if (__glibc_unlikely (malloc_dirname))
    free (dirname);

  return retval;
}
#if defined _LIBC && !defined __glob
versioned_symbol (libc, __glob, glob, GLIBC_2_27);
libc_hidden_ver (__glob, glob)
#endif


/* Do a collated comparison of A and B.  */
static int
collated_compare (const void *a, const void *b)
{
  char *const *ps1 = a; char *s1 = *ps1;
  char *const *ps2 = b; char *s2 = *ps2;

  if (s1 == s2)
    return 0;
  if (s1 == NULL)
    return 1;
  if (s2 == NULL)
    return -1;
  return strcoll (s1, s2);
}


/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's
   elements in place.  Return nonzero if out of memory, zero if successful.
   A slash is inserted between DIRNAME and each elt of ARRAY,
   unless DIRNAME is just "/".  Each old element of ARRAY is freed.  */
static int
prefix_array (const char *dirname, char **array, size_t n)
{
  size_t i;
  size_t dirlen = strlen (dirname);
  char dirsep_char = '/';

  if (dirlen == 1 && dirname[0] == '/')
    /* DIRNAME is just "/", so normal prepending would get us "//foo".
       We want "/foo" instead, so don't prepend any chars from DIRNAME.  */
    dirlen = 0;

#if defined __MSDOS__ || defined WINDOWS32
  if (dirlen > 1)
    {
      if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':')
	/* DIRNAME is "d:/".  Don't prepend the slash from DIRNAME.  */
	--dirlen;
      else if (dirname[dirlen - 1] == ':')
	{
	  /* DIRNAME is "d:".  Use ':' instead of '/'.  */
	  --dirlen;
	  dirsep_char = ':';
	}
    }
#endif

  for (i = 0; i < n; ++i)
    {
      size_t eltlen = strlen (array[i]) + 1;
      char *new = malloc (dirlen + 1 + eltlen);
      if (new == NULL)
	{
	  while (i > 0)
	    free (array[--i]);
	  return 1;
	}

      {
	char *endp = mempcpy (new, dirname, dirlen);
	*endp++ = dirsep_char;
	mempcpy (endp, array[i], eltlen);
      }
      free (array[i]);
      array[i] = new;
    }

  return 0;
}

/* Like 'glob', but PATTERN is a final pathname component,
   and matches are searched for in DIRECTORY.
   The GLOB_NOSORT bit in FLAGS is ignored.  No sorting is ever done.
   The GLOB_APPEND flag is assumed to be set (always appends).  */
static int
glob_in_dir (const char *pattern, const char *directory, int flags,
	     int (*errfunc) (const char *, int),
	     glob_t *pglob, size_t alloca_used)
{
  size_t dirlen = strlen (directory);
  void *stream = NULL;
# define GLOBNAMES_MEMBERS(nnames) \
    struct globnames *next; size_t count; char *name[nnames];
  struct globnames { GLOBNAMES_MEMBERS (FLEXIBLE_ARRAY_MEMBER) };
  struct { GLOBNAMES_MEMBERS (64) } init_names_buf;
  struct globnames *init_names = (struct globnames *) &init_names_buf;
  struct globnames *names = init_names;
  struct globnames *names_alloca = init_names;
  size_t nfound = 0;
  size_t cur = 0;
  int meta;
  int save;
  int result;

  alloca_used += sizeof init_names_buf;

  init_names->next = NULL;
  init_names->count = ((sizeof init_names_buf
                        - offsetof (struct globnames, name))
                       / sizeof init_names->name[0]);

  meta = __glob_pattern_type (pattern, !(flags & GLOB_NOESCAPE));
  if (meta == GLOBPAT_NONE && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
    {
      /* We need not do any tests.  The PATTERN contains no meta
	 characters and we must not return an error therefore the
	 result will always contain exactly one name.  */
      flags |= GLOB_NOCHECK;
    }
  else if (meta == GLOBPAT_NONE)
    {
      size_t patlen = strlen (pattern);
      size_t fullsize;
      bool alloca_fullname
        = (! size_add_wrapv (dirlen + 1, patlen + 1, &fullsize)
           && glob_use_alloca (alloca_used, fullsize));
      char *fullname;
      if (alloca_fullname)
        fullname = alloca_account (fullsize, alloca_used);
      else
	{
	  fullname = malloc (fullsize);
	  if (fullname == NULL)
	    return GLOB_NOSPACE;
	}

      mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
			"/", 1),
	       pattern, patlen + 1);
      if (glob_lstat (pglob, flags, fullname) == 0
	  || errno == EOVERFLOW)
	/* We found this file to be existing.  Now tell the rest
	   of the function to copy this name into the result.  */
	flags |= GLOB_NOCHECK;

      if (__glibc_unlikely (!alloca_fullname))
	free (fullname);
    }
  else
    {
      stream = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
		? (*pglob->gl_opendir) (directory)
		: opendir (directory));
      if (stream == NULL)
	{
	  if (errno != ENOTDIR
	      && ((errfunc != NULL && (*errfunc) (directory, errno))
		  || (flags & GLOB_ERR)))
	    return GLOB_ABORTED;
	}
      else
	{
	  int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
			   | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0));
	  flags |= GLOB_MAGCHAR;

	  while (1)
	    {
	      struct readdir_result d;
	      {
		if (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
		  d = convert_dirent (GL_READDIR (pglob, stream));
		else
		  {
#ifdef COMPILE_GLOB64
		    d = convert_dirent (__readdir (stream));
#else
		    d = convert_dirent64 (__readdir64 (stream));
#endif
		  }
	      }
	      if (d.name == NULL)
		break;

	      /* If we shall match only directories use the information
		 provided by the dirent call if possible.  */
	      if (flags & GLOB_ONLYDIR)
		switch (readdir_result_type (d))
		  {
		  case DT_DIR: case DT_LNK: case DT_UNKNOWN: break;
		  default: continue;
		  }

	      if (fnmatch (pattern, d.name, fnm_flags) == 0)
		{
		  if (cur == names->count)
		    {
		      struct globnames *newnames;
		      size_t count = names->count * 2;
		      size_t nameoff = offsetof (struct globnames, name);
		      size_t size = FLEXSIZEOF (struct globnames, name,
						count * sizeof (char *));
		      if ((SIZE_MAX - nameoff) / 2 / sizeof (char *)
			  < names->count)
			goto memory_error;
		      if (glob_use_alloca (alloca_used, size))
			newnames = names_alloca
			  = alloca_account (size, alloca_used);
		      else if ((newnames = malloc (size))
			       == NULL)
			goto memory_error;
		      newnames->count = count;
		      newnames->next = names;
		      names = newnames;
		      cur = 0;
		    }
		  names->name[cur] = strdup (d.name);
		  if (names->name[cur] == NULL)
		    goto memory_error;
		  ++cur;
		  ++nfound;
		  if (SIZE_MAX - pglob->gl_offs <= nfound)
		    goto memory_error;
		}
	    }
	}
    }

  if (nfound == 0 && (flags & GLOB_NOCHECK))
    {
      size_t len = strlen (pattern);
      nfound = 1;
      names->name[cur] = malloc (len + 1);
      if (names->name[cur] == NULL)
	goto memory_error;
      *((char *) mempcpy (names->name[cur++], pattern, len)) = '\0';
    }

  result = GLOB_NOMATCH;
  if (nfound != 0)
    {
      char **new_gl_pathv;
      result = 0;

      if (SIZE_MAX / sizeof (char *) - pglob->gl_pathc
	  < pglob->gl_offs + nfound + 1)
	goto memory_error;

      new_gl_pathv
	= realloc (pglob->gl_pathv,
		   (pglob->gl_pathc + pglob->gl_offs + nfound + 1)
		    * sizeof (char *));

      if (new_gl_pathv == NULL)
	{
	memory_error:
	  while (1)
	    {
	      struct globnames *old = names;
	      for (size_t i = 0; i < cur; ++i)
		free (names->name[i]);
	      names = names->next;
	      /* NB: we will not leak memory here if we exit without
		 freeing the current block assigned to OLD.  At least
		 the very first block is always allocated on the stack
		 and this is the block assigned to OLD here.  */
	      if (names == NULL)
		{
		  assert (old == init_names);
		  break;
		}
	      cur = names->count;
	      if (old == names_alloca)
		names_alloca = names;
	      else
		free (old);
	    }
	  result = GLOB_NOSPACE;
	}
      else
	{
	  while (1)
	    {
	      struct globnames *old = names;
	      for (size_t i = 0; i < cur; ++i)
		new_gl_pathv[pglob->gl_offs + pglob->gl_pathc++]
		  = names->name[i];
	      names = names->next;
	      /* NB: we will not leak memory here if we exit without
		 freeing the current block assigned to OLD.  At least
		 the very first block is always allocated on the stack
		 and this is the block assigned to OLD here.  */
	      if (names == NULL)
		{
		  assert (old == init_names);
		  break;
		}
	      cur = names->count;
	      if (old == names_alloca)
		names_alloca = names;
	      else
		free (old);
	    }

	  pglob->gl_pathv = new_gl_pathv;

	  pglob->gl_pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;

	  pglob->gl_flags = flags;
	}
    }

  if (stream != NULL)
    {
      save = errno;
      if (__glibc_unlikely (flags & GLOB_ALTDIRFUNC))
	(*pglob->gl_closedir) (stream);
      else
	closedir (stream);
      __set_errno (save);
    }

  return result;
}